public class Example29 {
    public static void main(String[] args) {
        int[] arr = { 9, 8, 3, 5, 2};
        System.out.println("冒泡排序前 ： ");
        printArray(arr);
        bubbleSort(arr);
        System.out.println("冒泡排序后 ： ");
        printArray(arr);
    }
    public static void printArray (int [] arr) {
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i] + "");
        }
        System.out.print("\n");
    }
    public static void bubbleSort (int[]arr){
        // 9, 8, 3, 5, 2
        for (int i = 0; i < arr.length-1; i++) {
            for (int j = 0; j < arr.length - i - 1; j++) {
                if (arr[j] > arr[j + 1] ) {
                    int temp = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = temp;
                }
            }
            System.out.println("第" +(i + 1) + "轮排序后");
            printArray(arr);
        }
    }
}
